WASHINGTON — Mao-adoring Twitch streamer Hasan Piker erupted in fury after Wisconsin state rep. Francesca Hong’s shocking defeat in the Democratic gubernatorial primary, venting that boomers should be outlawed. Piker, who had stumped with Hong during the final weeks of her primary, blamed older Americans for her loss amid her double-digit lead in most polling and struggled to talk about the blow to the far-left. “I don’t want to read this because I will f—ing kill myself with a gun in a video game,” Piker griped after reading an article about a late-deciding voter who backed Milwaukee County Executive David...